fix(review)

Author: louismaximepiton

scss/_button-group.scss

@@ -67,7 +67,7 @@
 
   // Boosted mod
   > [class*="btn-outline-"]:not(:last-of-type) {
-    border-right: 0;
+    border-right-width: 0;
 
     &::after {
       display: inline-block;
@@ -77,6 +77,16 @@
       content: "";
       border: 0;
     }
+
+    &:focus {
+      &[data-focus-visible-added] {
+        border-right-width: var(--#{$prefix}btn-border-width);
+
+        &::after {
+          display: none;
+        }
+      }
+    }
   }
   // End mod
 }